From 56496cf796e17c064e30fdcab2f1a9b1cdc92796 Mon Sep 17 00:00:00 2001 From: "walter.hsiao" Date: Wed, 7 Aug 2019 16:00:46 +0800 Subject: mtk_mdp: Add the service for mdp driver Add MDP service, ROM size refine. BUG=b:139269434 TEST=build kukui_scp pass & check MDP_SERVICE is available BRANCH=none Change-Id: Ic038d52eaf9aa8d32198ddd500b637bb3eca4f25 Signed-off-by: Christie Yu Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1584181 Reviewed-by: Nicolas Boichat Reviewed-by: Yilun Lin Tested-by: Nicolas Boichat Commit-Queue: Nicolas Boichat --- board/kukui_scp/mdp_ipi_message.c | 82 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 board/kukui_scp/mdp_ipi_message.c (limited to 'board/kukui_scp/mdp_ipi_message.c') diff --git a/board/kukui_scp/mdp_ipi_message.c b/board/kukui_scp/mdp_ipi_message.c new file mode 100644 index 0000000000..a33048821f --- /dev/null +++ b/board/kukui_scp/mdp_ipi_message.c @@ -0,0 +1,82 @@ +/* Copyright 2018 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "console.h" +#include "queue_policies.h" +#include "task.h" +#include "util.h" + +#include "chip/mt_scp/ipi_chip.h" +#include "chip/mt_scp/registers.h" +#include "mdp_ipi_message.h" + +#define CPRINTF(format, args...) cprintf(CC_IPI, format, ##args) +#define CPRINTS(format, args...) cprints(CC_IPI, format, ##args) + +/* Forwad declaration. */ +static struct consumer const event_mdp_consumer; +static void event_mdp_written(struct consumer const *consumer, size_t count); + +static struct queue const event_mdp_queue = QUEUE_DIRECT(4, + struct mdp_msg_service, null_producer, event_mdp_consumer); +static struct consumer const event_mdp_consumer = { + .queue = &event_mdp_queue, + .ops = &((struct consumer_ops const) { + .written = event_mdp_written, + }), +}; + +/* Stub functions only provided by private overlays. */ +#ifndef HAVE_PRIVATE_MT8183 +void mdp_common_init(void) {} +void mdp_ipi_task_handler(void *pvParameters) {} +#endif + +static void event_mdp_written(struct consumer const *consumer, size_t count) +{ + task_wake(TASK_ID_MDP_SERVICE); +} + +static void mdp_ipi_handler(int id, void *data, unsigned int len) +{ + struct mdp_msg_service cmd; + + cmd.id = id; + memcpy(cmd.msg, data, MIN(len, sizeof(cmd.msg))); + + /* + * If there is no other IPI handler touch this queue, we don't need to + * interrupt_disable() or task_disable_irq(). + */ + if (!queue_add_unit(&event_mdp_queue, &cmd)) + CPRINTS("Could not send mdp id: %d to the queue.", id); +} +DECLARE_IPI(IPI_MDP_INIT, mdp_ipi_handler, 0); +DECLARE_IPI(IPI_MDP_FRAME, mdp_ipi_handler, 0); +DECLARE_IPI(IPI_MDP_DEINIT, mdp_ipi_handler, 0); + +/* This function renames from mdp_service_entry. */ +void mdp_service_task(void *u) +{ + struct mdp_msg_service rsv_msg; + size_t size; + + mdp_common_init(); + + while (1) { + /* + * Queue unit is added in IPI handler, which is in ISR context. + * Disable IRQ to prevent a clobbered queue. + */ + ipi_disable_irq(SCP_IRQ_IPC0); + size = queue_remove_unit(&event_mdp_queue, &rsv_msg); + ipi_enable_irq(SCP_IRQ_IPC0); + + if (!size) + task_wait_event(-1); + else + mdp_ipi_task_handler(&rsv_msg); + } +} -- cgit v1.2.1